NP tests

NP tests for a rapid antimicrobial resistance mechanisms detection

The NP tests are a growing series of panels designed by Liofilchem in collaboration with Prof. Patrice Nordmann, University of Fribourg, Switzerland, for the rapid detection of antimicrobial resistance mechanisms.

Rapid ESBL NP® test

Rapid ESBL NP® test is a 8-test panel used for the identification of ESBL producers among Enterobacteriaceae. A panel allows the ESBL detection of 8 different isolates. The dried up substrata in the wells are rehydrated with a lysed microbial suspension. After 20 minutes incubation at 36±2°C the result is read and interpreted by a clear color change.

Learn more: IFU 

Pack content

  • 2 panels (8 tests/panel)
  • 1 vial of Lysis Buffer (8 ml)
  • 16 empty vials
  • reclosable bag
  • sealing film for multiple usage

Catalog Ref. 76036


RapidResa Polymyxin Acinetobacter NP® test

RapidResa Polymyxin Acinetobacter NP® test is a 8-test panel containing desiccated biochemical substrates for rapid detection of colistin-resistant/-susceptible Acinetobacter baumannii isolates. A panel allows testing of eight (8) different isolates.
Test results are evaluated by visual assessment of color development in the wells.
This assay is based on the utilization of resazurin (7-hydroxy-3H-phenoxazin-3-one-10-oxide) as cell viability indicator and a comparison of bacterial growth in medium with or without a defined concentration of colistin. 

Learn more: IFU 

Pack content

  • 2 panels (8 tests/panel)
  • 16 tubes of Mueller Hinton II Broth (3.6 ml)
  • 1 vial of Resazurin Solution (1.2 ml)
  • reclosable bag
  • sealing film for multiple usage

Catalog Ref. 76046




Direct detection of extended-spectrum-β-lactamase-producers in Enterobacterales from blood cultures: a comparative analysis
Boattini, M., Bianco, G., Comini, S. et al. 
Eur J Clin Microbiol Infect Dis (2021)

RapidResa Polymyxin Acinetobacter NP® Test for Rapid Detection of Polymyxin Resistance in Acinetobacter baumannii
Bouvier, M.; Sadek, M.; Pomponio, S.; D’Emidio, F.; Poirel, L.; Nordmann, P.
Antibiotics 2021, 10, 558

Evaluation of the performance of rapid tests for screening carriers of acquired ESBL producers and their impact on the turnaround time
D. S. Blanc, F. Poncet, B. Grandbastien , G. Greub, L. Senn, P. Nordmann
The Journal of Hospital Infection, October 2020

Rapid detection of extended-spectrum beta-lactamase producing Enterobacteriaceae
P. Nordmann, A. Demord, F. D’Emidio, S. Pomponio, L. Poirel